AGM battery advice

narcodog wrote:

Padres_Chris wrote:
We're looking to switch to agm batteries. Will our stock inteli-power 9200 series charger model pd9245c work ok with those?

Thanks
Chris

That's what I have and it works very well.

X2

Padres_Chris wrote:
We're looking to switch to agm batteries. Will our stock inteli-power 9200 series charger model pd9245c work ok with those?

Thanks
Chris

That's what I have and it works very well.

I haven't disabled the charge line from the truck to the RV.

We're looking to switch to agm batteries. Will our stock inteli-power 9200 series charger model pd9245c work ok with those?

Thanks
Chris

Don't buy AGM Tanks on Amazon. I bought 85ah to power a 55lb trolling motor. Did not last one season

jmckelvy wrote:

If your Northstar has the same brand (WFCO) converter my previous Northstar 8.5 Arrow did it should work OK with AGM batteries. I used two Lifeline Grp 27s in that camper for almost 7 years with no problems. I transferred the same batteries into my AF 990 where they are still going strong at over 8 years.

It does use a WFCO converter. I can lookup the exact model. Last I looked it's float was 13.2v, absorption=13.6, and bulk 14.4v. And this is what I am seeing although I have yet to see it go to bulk mode yet. The specs for the Trojan AGM calls for 14.2-14.6v for absorption which is the same as the Lifeline's. So I guess if it's working fine for you with a lower charging voltage it should for me as well.....

woodhog wrote:
With AGM batteries do you have to disable the charge line from the
truck alternator?

I never have. Have used mine with a 2001 Chevy 2500HD and the current RAM 3500.

With AGM batteries do you have to disable the charge line from the
truck alternator?

smkettner wrote:
IOTA with IQ controller.

This is the one I am using also . It is charging two cheap Walmart 24 batteries for the past seven years with no problems . My 12v requirements are not very much . It is plugged in 24/7 when not on the road and water level is checked twice a year and is down very little , maybe an 1/8" or less .

My point is that it is important to know your 12v requirements in order to know the most practical way to satisfy it . AGM batteries are very good , and expensive , if you are not utilizing their benefits .

I am certain that for me the converter/charger was the most critical and beneficial part of the 12v system .

frank33v wrote:

billtex wrote:
As Mark noted, AGM's are great. But anyone planning to invest in them should be sure to install a proper 3 stage charger/converter compatible with AGM charging profile FIRST.
.

What would you recommend as a proper 3 stage charger/converter? The one that came with my Northstar says it's three stage but the 3 voltages don't seem to coincide with what Trojan recommends. Trojan recommends absorption at 14.1-14.7 and float at 13.5 for a 12v battery.

If your Northstar has the same brand (WFCO) converter my previous Northstar 8.5 Arrow did it should work OK with AGM batteries. I used two Lifeline Grp 27s in that camper for almost 7 years with no problems. I transferred the same batteries into my AF 990 where they are still going strong at over 8 years.